Process of making wind-musical-instrument valves.



E. J. GULICK.

PROCESS OF MAKING WIND MUSICAL INSTRUMENT VALVES.

APPLICATION FILED MAR.16. ma.

1,295 305 Patented Feb. 25, 1919.

EDWARD J. GULICK, 0F ELKHART, INDIANA.

PROCESS OF MAKING WIND-MUSICAL-INSTRUMENT VALVES.

Specification of Letters Patent.

Patented Feb. 25, 1919.

Application filed March 16, 1918. Serial No. 222,876.

To all whom it may concern:

Be it known that I, EDWARD J. GULIoK, a citizen of the United-States, residing at Elkhart, county of Elkhart, Indiana, have invented certain new and useful Improvements in Processes of Making Wind-Musical-Instrument Valves, of which the following is a specification.

This invention relates to the process of making piston valves for wind musical instruments of the horn or cornet type, and the like, the invention being applicable to all wind musical instruments in which piston valves are used.

Heretofore valves of the character herein described have been made of two or more separate pieces of metal permanently joined together by brazing, welding, or otherwise, which construction is complicated, expensive and frequently productive of unsatisfactory results.

The object of my invention is to render the process of valve construction more simple, more expeditious, much cheaper, and to effect improved results in the musical inv strument.

fragment prior to forcing the arbor and tubeinto the die for reduction thereof.

Similar numerals of reference indicate like members and parts of members throughout the several views of the drawing.

Referring to the drawing in detail, the numeral 1 indicates a musical instrument of the comet type in which the valve casing 2 is shown partially in section and within which casing the piston valve 3 is reciprocally arranged. The numeral 4: indicates the conventional presser key adapted for finger manipulation which is operatively connected with the valve 3 by the stem 5 and a stem cap 6, the latter being screw threaded into the interior of the upper end of the valve,

The piston valve 3 is made from a single piece of ductile metal tubing of substantially uniform diameter and predetermined length and when finished has the cylindrical piston portion 7 and the somewhat reduced cylindrical integral portion 8, the former section having a plurality of the conventional air passages 9, 9 formed therein which are adapted to be moved into registration with the air passages in the valve casing (passages in casing not shown), and the latter having a plurality of elongated apertures or slots 10- (one only being shown) formed in said portion 8 which are adapted to be engaged by the prongs of any type of spring seat arranged Within said portion 8, neither the spring nor seat being shown herein as they are old and well known in the art. The numeral 11 indicates the screw threads formed interiorly of the end of valve portion 8 which are adapted to be engaged by the threads on the stem cap 6.

Numeral 12 indicates a die body formed with a recess 13 within which the Wear taking die 14 is removably arranged, the latter having the intercommunicating cylindrical bores 15 and 16 of difierent diameters, the latter being in registration and formed axially of the bore 17 formed in the die body 12 and the bore 17 formed in the base member 18. The die member 14 is secured within the recess 13 by the screws 19, 19, and die member 12 is rigidly secured to the base 18 by the screws 20, 20.

The numeral 21 indicates an arbor formed with the cylindrical portions 22 and 23, respectively, the latter being of somewhat less diameter than the former and somewhat smaller than the die bore 16.

The first step of my improved process consists of the construction of a cylindrical ductile metal tube 24 of predetermined length and substantially uniform diameter the lower end of which is inwardly bent or flanged at 25, the resultant end aperture 26 being thereby rendered somewhat smaller than the end of the arbor portion 23, the tube 24; being made to fit in the die bore 15 with slight play. The arbor 21 is adapted to be fastened in any type of press and in axial alinement with the die bores 15 and 16. Thereupon, the arbor 21 is sleeved by a tube 24: and the former driven or thrust into the die bores, the tube flange 25 being engaged by the point of the arbor portion 23 and projected through the die bore 15 and downward and compressed within the die bore 16 and around the arbor portion 23, finally projecting through the base bores 17 and 17. Thereafter, the valve body thus roughly formed from the tube 24: is removed from the arbor and finished by cutting oil the flange 25, threading the portion 8 at 11, forming the apertures 9, 9 and 10, 10, and eXteriorly finishing the valve member to the desired dimensions.

I claim:

1. The process of making one piece valve or piston bodies for Wind musical instruments which consists in producing a ductile metal tube of substantially uniform diameter and predetermined length, then reducing the diameter of said tube for a portion of its length by compression, then forming suitable air passages in the larger tube portion and suitable spring seat apertures or slots in the smaller tube portion; and then dressing the exterior of the body member to the desired dimensions.

2. The process of making one piece valve or piston bodies for Wind musical instruments Which consists in producing a. ductile metal tube of substantially uniform diameter and predetermined length, then reducing the diameter of said tube for a portion of its length by compression, then forming suitable air passages in the larger tube portion and suitable spring seat slots in the smaller tube portion, then forming screw threads on the smaller tube portion, and then dressing the exterior of the body member to the desired dimensions.

In testimony whereof I have hereunto aiiixed my signature this 14th day or" March, 1 918.

EDWARD J. GULICK.

Copies of this patent may be obtained for five cents. each, by addressing the Commissioner of ZPatents, Washington, D. G. 

